Kaia Virtual Machine (KVM) and EVM Compatibility

The Kaia Virtual Machine (KVM) is a specialized execution environment derived from the Ethereum Virtual Machine (EVM), designed to run smart contracts on the Kaia blockchain. It maintains full compatibility with EVM opcodes, and it allows developers to deploy Ethereum-based decentralized applications (dApps) onto Kaia requiring minimal modifications to their original code. This compatibility ensures that existing Ethereum projects can transition to Kaia easily, taking advantage of the platform’s enhanced performance and lower transaction costs.

Developers who are familiar with Ethereum’s ecosystem can use the same tools and programming languages when working on Kaia. The KVM supports Solidity, the primary language for Ethereum smart contracts, enabling developers to write and deploy contracts without learning new languages or frameworks. Additionally, popular development tools such as Remix, Hardhat, and Foundry are fully compatible with Kaia, streamlining the development process and reducing the learning curve for new projects.

Beyond basic EVM compatibility, the KVM introduces additional precompiled contracts unique to Kaia, expanding the functionality available to developers. These precompiled contracts are assigned addresses in descending order from 0x03ff to avoid conflicts with existing EVM precompiled contracts. This design choice ensures that developers have access to enhanced features while maintaining compatibility with standard EVM operations.

Smart Contract Development

Developers can write smart contracts on Kaia using EVM-compatible programming languages, primarily Solidity, which is widely used for smart contract development on Ethereum and other EVM-compatible blockchains, making it a natural choice for Kaia.

Deploying smart contracts on Kaia involves compiling the contract code into EVM bytecode and submitting it to the network through a transaction. Once deployed, the smart contract resides at a unique address on the Kaia blockchain. Users and other contracts can interact with it by sending transactions or calls to this address. The Kaia Virtual Machine (KVM) ensures efficient execution of smart contracts, benefiting from Kaia’s high-performance infrastructure, which includes one-second block times and immediate transaction finality. This rapid processing capability enhances the responsiveness of decentralized applications (dApps) built on Kaia, providing great user experience.

Kaia’s Account Model and Key Management

Kaia uses an account model that separates user addresses from public keys, enhancing security and flexibility through a design that allows its users to register multiple public keys to a single account, each being assigned specific roles or permissions. This structure facilitates finer access control and supports advanced features like account recovery and multi-signature authorization.

Key management is facilitated through integration with existing user authentication systems, reducing the complexity typically associated with blockchain key management. This approach lowers the barrier to entry for new users and enhances the overall security of the platform by allowing for more granular control over account access and permissions. Kaia’s account model also supports hierarchical deterministic (HD) wallets, enabling users to manage multiple addresses and keys efficiently.

Fee Delegation Mechanisms

Kaia introduces a fee delegation feature that enables service providers to pay transaction fees on behalf of users. This mechanism lowers the barrier to entry for users unfamiliar with blockchain technology by removing the need to hold native tokens for transaction fees. Fee delegation enhances user experiencethrough good interactions with dApps without the friction of managing transaction fees, thereby promoting broader adoption of blockchain services. Service providers can implement various fee delegation models, such as partial or full fee coverage, to accommodate different business strategies and user engagement approaches. This flexibility allows developers to create user-friendly applications that can attract a wider audience, including those who may be hesitant to engage with blockchain technology due to concerns about transaction fees.

Integration with LINE and Kakaotalk Messenger Apps for User Onboarding

Kaia integrates with popular messaging applications LINE and Kakaotalk, which collectively have over 250 million users across Asia. This integration allows users to access blockchain-based services directly within familiar messaging platforms, simplifying the onboarding process. By embedding Web3 functionalities into these apps, Kaia enables users to interact with dApps, manage digital assets, and participate in blockchain ecosystems without leaving their preferred communication tools. This approach significantly enhances user accessibility and drives the adoption of decentralized services.

Highlights

• Kaia’s EVM compatibility enables easy deployment of Ethereum-based dApps.
• Smart contracts on Kaia are developed using Solidity, streamlining the development process.
• Kaia’s account model enhances security and flexibility through address and public key separation.
• Fee delegation allows service providers to cover transaction fees, simplifying user experience.
• Integration with LINE and Kakaotalk improves onboarding and drives blockchain service adoption.